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Xiong YS, Li MX, Jia R, Zhou LS, Fan BH, Tang JY, Gai L, Li W, Lu HQ, Li K. Polyethyleneimine/polydopamine-functionalized self-floating microspheres for caramel adsorption: Interactions and phenomenological mass transfer kinetics. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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2
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Polydopamine-modified ceramic membrane for filtering brown sugar redissolved syrup: Characterisation, experiments, and advanced modelling. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Patil PS, Chakraborty A, Kadam SS, Kharkar PS, Patwardhan AV, Joshi SV. Greener approach for process intensification of iron haematinics by membrane nanofiltration. J INDIAN CHEM SOC 2022; 99:100510. [DOI: 10.1016/j.jics.2022.100510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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4
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Huang J, Luo J, Chen X, Feng S, Wan Y. New insights into effect of alkaline cleaning on fouling behavior of polyamide nanofiltration membrane for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146632. [PMID: 34030314 DOI: 10.1016/j.scitotenv.2021.146632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Membrane fouling is an intractable issue in wastewater treatment by nanofiltration (NF) membrane, and alkaline cleaning is the most effective approach to remove organic fouling on NF membrane. However, it was found that pore swelling of NF membrane induced by alkaline cleaning might reduce cleaning efficiency, and it is never quantified and its effect on membrane fouling behavior is still mysterious. In this work, membrane pore swelling effect (~9.7%, increment of effective pore size) induced by alkaline cleaning (pH 11) is confirmed and its effect on fouling behavior of the polyamide NF membrane is investigated based on experimental and modelling results. It is found that the alkali-induced pore swelling phenomenon would disappear after water filtration at neutral pH for 30 min, and if such cleaned membrane is faced by the small foulants during this pore shrinkage period, the concentration polarization and membrane fouling would be severer, and the subsequent alkaline cleaning is less effective because more foulants enter the enlarged pores and are tightly embedded in the membrane. Thus, the irreversible fouling of the NF membrane increases from 20% to 40% while its permeability recovery declines from 100% to 67% after six fouling/cleaning cycles. When an anionic surfactant sodium dodecyl sulfate (SDS, 10 mM) is added in the alkaline cleaning solution, the adsorption of SDS in/on the membrane can not only improve its hydrophilicity and negative charge, but also quickly eliminate the alkali-induced pore swelling effect and avoid the accumulation of foulants in the pores, thereby enhancing the antifouling performance of the NF membrane. Using the alkaline SDS cleaning, the irreversible fouling of the NF membrane maintains below 10% while its permeability recovery keeps above 100% in six continuous fouling/cleaning cycles.
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Affiliation(s)
- Jiachen Huang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jianquan Luo
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Xiangrong Chen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shichao Feng
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yinhua Wan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
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Improved antifouling performance of a polyamide composite reverse osmosis membrane by surface grafting of dialdehyde carboxymethyl cellulose (DACMC). J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118843] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Li J, Liu Y, Campos LC, Coppens MO. Increased E. coli bio-adsorption resistance of microfiltration membranes, using a bio-inspired approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:141777. [PMID: 32871317 DOI: 10.1016/j.scitotenv.2020.141777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/15/2020] [Accepted: 08/16/2020] [Indexed: 06/11/2023]
Abstract
Cells have inherent anti-fouling properties. The mechanisms underpinning these natural properties inform the design of an anti-biosorption coating for a polyethersulfone microfiltration membrane, which includes polydopamine and chitosan layers. This tri-layered membrane is created using quick and easy synthesis method. Its ability to resist bio-adsorption and membrane extracellular polymeric substances (EPS) formation is investigated using the bacterium E. coli (ATCC 11775, 1.5 × 107 CFU/mL). In addition, the proliferative bio-adsorption process is explored on the microfiltration membrane surface, using natural water under static and shaken conditions, while monitoring the bio-adsorption kinetics and EPS dynamic changes. The characterization results show that the modification by polydopamine and chitosan change the membrane surface morphology and increase its hydrophilicity. After 10 min dipping in 5 g/L chitosan solution, the pure water flux of the modified membrane is 5469 ± 30 L/(m2·h) (0.2 bar) and the contact angle decreases to 36.7 ± 1.0°, compared with 9889 ± 23 L/(m2·h) (0.2 bar) and 60.3 ± 1.5° for the unmodified polyethersulfone membrane, respectively. In proliferative bio-adsorption tests, the modified membrane is shown to decrease bio-adsorption by 0.4-2.3 orders of magnitude. However, no antimicrobial function is observed, probably due to the alkaline environment and insufficient functional amino groups. A series of linear and non-linear kinetic models is applied to fit the proliferative bio-adsorption process. The pseudo-second-order model is found to describe the proliferative bio-adsorption process best. Neither total organic carbon (TOC) nor protein is detected on the modified membrane surface. In contrast, on the unmodified PES membrane the ratios of protein/TOC (%), TOC/abundance ((μg/cm2)/CFU (log)) and protein/abundance ((μg/cm2)/CFU(log)) are 10%-16%, 0.17-0.28 and 0.02-0.04, respectively. No significant difference (p > 0.05) is found between static and shaken conditions. All these results point to improved anti-biosorption properties for water treatment applications, encouraging further studies on this membrane.
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Affiliation(s)
- Jianan Li
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK
| | - Yanan Liu
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK
| | - Luiza C Campos
- Department of Civil, Environmental & Geomatic Engineering, University College London, London WC1E 6BT, UK
| | - Marc-Olivier Coppens
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK.
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Qi T, Da X, Zhang Y, Chen X, Cui Z, Qiu M, Fan Y. Modeling and optimal operation of intermittent feed diafiltration for refining oligodextran using nanoporous ceramic membranes. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Hemmati A, Mirsaeedghazi H, Aboonajmi M. The effect of ultrasound treatment on the efficiency of membrane clarification of carrot juice. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.15001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Arash Hemmati
- Department of Agrotechnology College of Abouraihan University of Tehran Pakdasht Iran
| | - Hossein Mirsaeedghazi
- Department of Food Technology College of Abouraihan University of Tehran Pakdasht Iran
| | - Mohammad Aboonajmi
- Department of Agrotechnology College of Abouraihan University of Tehran Pakdasht Iran
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Li Y, Luo J, Wan Y. Biofouling in sugarcane juice refining by nanofiltration membrane: Fouling mechanism and cleaning. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118432] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Impact of MWCO and Dopamine/Polyethyleneimine Concentrations on Surface Properties and Filtration Performance of Modified Membranes. MEMBRANES 2020; 10:membranes10090239. [PMID: 32961881 PMCID: PMC7559832 DOI: 10.3390/membranes10090239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 01/27/2023]
Abstract
The mussel-inspired method has been investigated to modify commercial ultrafiltration membranes to induce antifouling characteristics. Such features are essential to improve the feasibility of using membrane processes in protein recovery from waste streams, wastewater treatment, and reuse. However, some issues still need to be clarified, such as the influence of membrane pore size and the polymer concentration used in modifying the solution. The aim of the present work is to study a one-step deposition of dopamine (DA) and polyethyleneimine (PEI) on ultrafiltration membrane surfaces. The effects of different membrane molecular weight cut-offs (MWCO, 20, 30, and 50 kDa) and DA/PEI concentrations on membrane performance were assessed by surface characterization (FTIR, AFM, zeta potential, contact angle, protein adsorption) and permeation of protein solution. Results indicate that larger MWCO membranes (50 kDa) are most benefited by modification using DA and PEI. Moreover, PEI is primarily responsible for improving membrane performance in protein solution filtration. The membrane modified with 0.5:4.0 mg mL-1 (DA: PEI) presented a better performance in protein solution filtration, with only 15% of permeate flux drop after 2 h of filtration. The modified membrane can thus be potentially applied to the recovery of proteins from waste streams.
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Sjölin M, Thuvander J, Wallberg O, Lipnizki F. Purification of Sucrose in Sugar Beet Molasses by Utilizing Ceramic Nanofiltration and Ultrafiltration Membranes. MEMBRANES 2019; 10:E5. [PMID: 31892103 PMCID: PMC7022711 DOI: 10.3390/membranes10010005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/07/2019] [Accepted: 12/23/2019] [Indexed: 01/20/2023]
Abstract
Molasses is a sugar mill by-product with low value that today is used primarily for animal feed. However, molasses contains large amounts of sucrose which, if purified, could be used for other purposes. In this study, purification by membrane filtration using ceramic tubular ultrafiltration (UF) and nanofiltration (NF) was examined. NF purifies sucrose by removing small compounds, whereas UF removes larger compounds. Based on our results, high filtration fluxes could be obtained, and it was possible to clean the membranes sufficiently from fouling compounds. Sucrose was separated from other compounds, but the separation efficiency was generally higher with diluted molasses compared with concentrated molasses. This could be explained by more severe fouling when filtering dilute molasses or potentially due to aggregate formations in the molasses as our analysis showed. Overall, this study shows the potential of ceramic UF and NF membranes for sucrose purification from molasses.
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Affiliation(s)
- Mikael Sjölin
- Department of Chemical Engineering, Faculty of Engineering, Lund University, 221 00 Lund, Sweden; (M.S.); (O.W.)
| | - Johan Thuvander
- Department of Food Technology, Engineering and Nutrition, Faculty of Engineering, Lund University, 221 00 Lund, Sweden;
| | - Ola Wallberg
- Department of Chemical Engineering, Faculty of Engineering, Lund University, 221 00 Lund, Sweden; (M.S.); (O.W.)
| | - Frank Lipnizki
- Department of Chemical Engineering, Faculty of Engineering, Lund University, 221 00 Lund, Sweden; (M.S.); (O.W.)
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